JP2020075363A - Device for supplying rubber material and method - Google Patents

Device for supplying rubber material and method Download PDF

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JP2020075363A
JP2020075363A JP2018207963A JP2018207963A JP2020075363A JP 2020075363 A JP2020075363 A JP 2020075363A JP 2018207963 A JP2018207963 A JP 2018207963A JP 2018207963 A JP2018207963 A JP 2018207963A JP 2020075363 A JP2020075363 A JP 2020075363A
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pressure
rubber material
brake
winding
brake pressure
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JP7176930B2 (en
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森　健一
Kenichi Mori
健一 森
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Toyo Tire Corp
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Toyo Tire and Rubber Co Ltd
Toyo Tire Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/08—Building tyres
    • B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
    • B29D30/24—Drums
    • B29D30/26—Accessories or details, e.g. membranes, transfer rings
    • B29D30/2607—Devices for transferring annular tyre components during the building-up stage, e.g. from the first stage to the second stage building drum

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tyre Moulding (AREA)

Abstract

To provide a device for supplying a rubber material capable of appropriately supplying a sheet-shaped rubber material of which a winding start end and a winding terminal end are taper-shaped to a molding drum.SOLUTION: A device 1 for supplying a rubber member is provided with a bobbin 2 on which a sheet-shaped rubber material (belt 93) of which a winding start end 93a and a winding terminal end 93b are taper-shaped is wound up, having a braking mechanism 20, and a brake pressure control unit 4 for controlling the brake pressure applied to the brake mechanism 20 so as to supply the rubber material (belt 93) from the bobbin 2 to the molding drum 3. The brake pressure control unit 4 is configured to control the brake pressure according to the width of the rubber material (belt 93) delivered to the molding drum 3.SELECTED DRAWING: Figure 4

Description

本開示は、ベルト等のゴム部材を供給する装置及び方法に関する。   The present disclosure relates to an apparatus and method for supplying a rubber member such as a belt.

空気入りタイヤの製造工程には、シート状の各種ゴム材料を成形ドラム上で貼り合わせることにより生タイヤを成形する工程がある。各種ゴム材料は、前工程で所定寸法に成形され、個別にボビンに巻き取られた後、成形工程においてボビンから引き出されて成形ドラムに供給される。   In the process of manufacturing a pneumatic tire, there is a process of molding a raw tire by bonding various sheet-shaped rubber materials on a molding drum. Various rubber materials are molded into a predetermined size in a previous step, individually wound on a bobbin, and then pulled out from the bobbin and supplied to a molding drum in a molding step.

日本国特許公開２０１７−４２９１５号公報には、ボビンが慣性により回転し過ぎてゴム材料が必要以上に引き出されることを防止するために、ボビンの回転軸に減圧弁を用いたブレーキを設け、一定のブレーキ圧を掛けてボビンの回転を制御しながら引き出して貼り付けを行うとの記載がある。この文献では、ゴム材料の残量に応じてブレーキ圧を制御するとの記載がある。具体的には、巻き始めのゴム材料が多いときはブレーキ圧を強くし、巻き終わりのゴム材料が少ないときはブレーキ圧を低くするとのことである。   In Japanese Patent Publication No. 2017-42915, in order to prevent the bobbin from excessively rotating due to inertia and the rubber material being pulled out more than necessary, a brake using a pressure reducing valve is provided on the rotating shaft of the bobbin, and the constant value is provided. There is a description that the brake pressure is applied and the bobbin is pulled out while the rotation of the bobbin is controlled to be attached. This document describes that the brake pressure is controlled according to the remaining amount of the rubber material. Specifically, when the amount of rubber material at the start of winding is large, the brake pressure is increased, and when the amount of rubber material at the end of winding is small, the brake pressure is decreased.

特開２０１７−４２９１５号公報JP, 2017-42915, A

ところで、近年、スーパーシングルと呼ばれるタイヤ幅の広い重荷重用タイヤが開発されている。この種の重荷重用タイヤは、コードのタイヤ周方向に対する傾斜角度が１０度以下のコードを有するベルトが用いられる。このベルトは、従来のベルトに比べて非常に長く、巻き付け始端及び巻き付け終端が先細形状である。例えばボビンの減圧弁のブレーキ圧が一定であれば、巻き始め及び巻き終わりにおいてベルトにテンションを掛けてしまうと、延びてしまうおそれがある。かといって、ブレーキ圧を低く設定すれば、幅が大きい部位を引き出す時に必要以上に引き出され、トラブルの原因となる。   By the way, in recent years, a heavy-duty tire called a super single with a wide tire width has been developed. For this type of heavy-duty tire, a belt having a cord whose inclination angle with respect to the tire circumferential direction is 10 degrees or less is used. This belt is much longer than conventional belts and has a winding start end and a winding end that are tapered. For example, if the brake pressure of the pressure reducing valve of the bobbin is constant, if tension is applied to the belt at the beginning and end of winding, the belt may be stretched. However, if the brake pressure is set low, it will be pulled out more than necessary when pulling out a part with a large width, which may cause trouble.

本開示は、このような課題に着目してなされたものであって、その目的は、巻き付け始端及び巻き付け終端が先細形状であるシート状のゴム材料を適切に成形ドラムに供給可能なゴム材料を供給する装置及び方法を提供することである。   The present disclosure has been made in view of such a problem, and an object thereof is to provide a rubber material capable of appropriately supplying a sheet-shaped rubber material having a tapered winding start end and winding end to a molding drum. It is to provide an apparatus and method for supplying.

本開示のゴム材料を供給する装置は、
巻き付け始端及び巻き付け終端が先細形状であるシート状のゴム材料が巻き取られ、ブレーキ機構を有するボビンと、
前記ボビンから成形ドラムに前記ゴム材料を供給するために前記ブレーキ機構に付与するブレーキ圧を制御するブレーキ圧制御部と、を備え、
前記ブレーキ圧制御部は、前記成形ドラムに繰り出されている前記ゴム材料の幅に応じて前記ブレーキ圧を制御するように構成されている。 The device for supplying the rubber material according to the present disclosure,
A bobbin having a braking mechanism, in which a sheet-shaped rubber material having a tapered winding start end and a winding end is wound up,
A brake pressure control unit that controls a brake pressure applied to the brake mechanism to supply the rubber material from the bobbin to the molding drum,
The brake pressure control unit is configured to control the brake pressure according to the width of the rubber material fed to the molding drum.

このように、巻き付け始端及び巻き付け終端が先細形状であるシート状のゴム材料の幅に応じてボビンのブレーキ圧を制御するので、ゴム材料が延びてしまうことや必要以上に引き出されるといった不具合を防止又は抑制することが可能となる。   In this way, the braking pressure of the bobbin is controlled according to the width of the sheet-shaped rubber material with the winding start end and the winding end being tapered, preventing the rubber material from extending and being pulled out more than necessary. Alternatively, it can be suppressed.

ゴム材料を供給する装置及び成形ドラムを示す図The figure which shows the apparatus and the forming drum which supply a rubber material. ゴム材料としてのベルトを有する空気入りタイヤの構成を示す図The figure which shows the structure of the pneumatic tire which has a belt as a rubber material. ベルトの平面図及び成形ドラムに巻き付けた状態のベルトの突合せ部の位置を示す図A plan view of the belt and a diagram showing the position of the abutting portion of the belt wound around the forming drum. ブレーキ圧の変化を示す図Diagram showing changes in brake pressure ブレーキ圧の変化の変化例を示す図Diagram showing an example of changes in brake pressure

以下、本開示の一実施形態を、図面を参照して説明する。   Hereinafter, an embodiment of the present disclosure will be described with reference to the drawings.

［空気入りタイヤの構造］
本実施形態のゴム部材を成形ドラム３へ供給する装置及び方法について説明する。本実施形態では、ゴム部材として、図２に示す空気入りタイヤを構成するベルト９３を例に挙げて説明するが、これに限定されない。例えば、ゴム部材の巻き付け始端及び巻き付け終端が先細形状であるシート状であれば、適用可能である。 [Pneumatic tire structure]
An apparatus and method for supplying the rubber member of the present embodiment to the molding drum 3 will be described. In the present embodiment, as the rubber member, the belt 93 forming the pneumatic tire shown in FIG. 2 will be described as an example, but the rubber member is not limited thereto. For example, it is applicable if the winding start end and the winding end end of the rubber member are taper-shaped sheets.

まず、ベルト９３を有する空気入りタイヤの構造について説明する。図２に示すように、空気入りタイヤは、図示しない一対のビード部に巻き上げられ且つタイヤ赤道ＣＬを通る少なくとも１枚のカーカスプライ９０と、カーカスプライ９０のタイヤ径方向外側ＲＤ１に順に設けられる複数のベルト９１、９２、９３、９４、９５と、複数のベルトのタイヤ外側に配置されるトレッドゴム９６と、を有する。各ベルトは、タイヤ周方向に対して傾斜するコードを有する。本実施形態の装置１で供給されるベルト９３は、他のベルトに比べて、コードのタイヤ周方向に対する傾斜角度が最も小さい。ベルト９３は、タイヤ径方向内側から外側に向けて３番目のベルトである。図３に示すように、ベルト９３のコードのタイヤ周方向ＣＤに対する傾斜角度θは、０度を超えて且つ１０度以下であることが好ましい。本実施形態では、約６．５度であるが、これに限定されない。このように、コードの周方向ＣＤに対する傾斜角度θが鋭角であるため、ベルト９３の巻き付け始端９３ａ及び巻き付け終端９３ｂが先細形状となる。   First, the structure of the pneumatic tire having the belt 93 will be described. As shown in FIG. 2, the pneumatic tire includes at least one carcass ply 90 wound around a pair of bead portions (not shown) and passing through the tire equator CL, and a plurality of pneumatic tires sequentially provided on the tire radial outside RD1 of the carcass ply 90. Belts 91, 92, 93, 94 and 95, and a tread rubber 96 arranged outside the tire of the plurality of belts. Each belt has a cord inclined with respect to the tire circumferential direction. The belt 93 supplied by the device 1 of the present embodiment has the smallest inclination angle of the cord with respect to the tire circumferential direction as compared with the other belts. The belt 93 is a third belt from the inner side in the tire radial direction to the outer side. As shown in FIG. 3, the inclination angle θ of the cord of the belt 93 with respect to the tire circumferential direction CD is preferably more than 0 degrees and 10 degrees or less. In the present embodiment, it is about 6.5 degrees, but is not limited to this. As described above, since the inclination angle θ of the cord with respect to the circumferential direction CD is an acute angle, the winding start end 93a and the winding end end 93b of the belt 93 are tapered.

空気入りタイヤの製造方法は、図１及び図３に示すように、成形ドラム３に、一番目のベルト９１を巻き付け、その後、二番目のベルト９２を巻き付け、その後、３番目のベルト９３を巻き付ける工程を有する。図１では、ベルト９３のみを図示している。図3に示すように、ベルト９３は、巻き付け始端９３ａと巻き付け終端９３ｂとを重ねずに突合せて巻き付けられる。図３に示すように、成形ドラム３上のベルト９３の突合せ部（９３ａ，９３ｂ）は、一つであり、周方向ＣＤに連続している。成形ドラム３上の突合せ部（９３ａ，９３ｂ）の位置は、始点を０度として、終点が２７０度以上且つ４５０度以内にあればよく、更に、終点が３１５度以上４０５度以下にあることが好ましい。また、同図に示すように、ベルト９３の突合せ部（９３ａ，９３ｂ）の周方向ＣＤに沿った長さＬ１は２５５８ｍｍであり、ベルト９３の周方向ＣＤに沿った長さＬ２は５５２３ｍｍである。よって、ベルト９３の周方向ＣＤに沿った全長Ｌ２に対する突合せ部（９３ａ，９３ｂ）の長さＬ１の比（Ｌ１×２／Ｌ２）は、約９２．６％である。勿論、これに限定されず、８０％以上であればよいし、更に９０％以上であることが好ましい。   As shown in FIGS. 1 and 3, the method for manufacturing a pneumatic tire is such that a first belt 91 is wound around a molding drum 3, a second belt 92 is then wound, and then a third belt 93 is wound. Have steps. In FIG. 1, only the belt 93 is shown. As shown in FIG. 3, the belt 93 is wound with the winding start end 93a and the winding end 93b abutting each other without overlapping. As shown in FIG. 3, the butting portion (93a, 93b) of the belt 93 on the forming drum 3 is one and is continuous in the circumferential direction CD. Regarding the position of the abutting portions (93a, 93b) on the molding drum 3, the starting point is 0 degrees, the end point may be 270 degrees or more and 450 degrees or less, and the end point may be 315 degrees or more and 405 degrees or less. preferable. Further, as shown in the figure, the length L1 of the abutting portions (93a, 93b) of the belt 93 along the circumferential direction CD is 2558 mm, and the length L2 of the belt 93 along the circumferential direction CD is 5523 mm. .. Therefore, the ratio (L1 × 2 / L2) of the length L1 of the abutting portions (93a, 93b) to the total length L2 of the belt 93 along the circumferential direction CD is about 92.6%. Of course, it is not limited to this, and may be 80% or more, more preferably 90% or more.

［ゴム部材を供給する装置］
図１に示すように、本実施形態の装置１は、ブレーキ機構２０を有するボビン２と、ボビン２から成形ドラム３にゴム材料（ベルト９３）を供給するためにブレーキ機構２０に付与するブレーキ圧を制御するブレーキ圧制御部４と、を有する。 [Device for supplying rubber member]
As shown in FIG. 1, the device 1 of the present embodiment includes a bobbin 2 having a brake mechanism 20 and a brake pressure applied to the brake mechanism 20 in order to supply the rubber material (belt 93) from the bobbin 2 to the molding drum 3. And a brake pressure control unit 4 for controlling.

ボビン２は、巻き付け始端９３ａ及び巻き付け終端９３ｂが先細形状であるシート状のゴム部材（ベルト９３）が巻き付けられる。ブレーキ機構２０は、減圧弁を用いたブレーキで、ブレーキ圧を付与することによりブレーキ圧に応じたブレーキ力をボビン２に与える。   The bobbin 2 is wound with a sheet-shaped rubber member (belt 93) whose winding start end 93a and winding end 93b are tapered. The brake mechanism 20 is a brake using a pressure reducing valve, and applies a brake pressure to the bobbin 2 so as to apply a braking force corresponding to the brake pressure.

ブレーキ圧制御部４は、成形ドラム３に繰り出されているゴム材料（ベルト９３）の幅に応じてブレーキ圧を制御するように構成されている。具体的には、図４は、縦軸がブレーキ圧［Ｍｐａ］であり、横軸が成形ドラム３に到達するゴム部材（ベルト９３）の位置である。図４に示すように、ベルト９３の幅が細い巻き付け開始時点及び巻き付け終了時点のブレーキ圧が相対的に低く、ベルト９３の幅が太い巻き付け開始時点と終了時点の中間時点のブレーキ圧が相対的に高くなるようにしている。すなわち、巻き付け開始から巻き付け終了に至るまでに、ブレーキ圧は、第１圧Ｐ１、第１圧Ｐ１よりも大きな第２圧Ｐ２、第２圧Ｐ２よりも小さな第３圧Ｐ３という順序で少なくとも複数段階変化する。本実施形態では、ベルト９３の幅が巻き付け始め側と終了側とで対称に変化するので、第１圧Ｐ１と第３圧Ｐ３を一致させているが、これに限定されない。第１圧Ｐ１と第３圧Ｐ３が一致していなくてもよい。本実施形態では、第１圧Ｐ１と第３圧Ｐ３が一致しているので、ブレーキ圧の変化は二段階であるが、これに限定されない。例えば、三回以上の段階で変かさせてもよい。本実施形態では、第１圧Ｐ１及び第３圧Ｐ３が０．０１Ｍｐａであり、第２圧Ｐ２が０．０２Ｍｐａである。この数値は一例であり、適宜変更可能である。   The brake pressure control unit 4 is configured to control the brake pressure according to the width of the rubber material (belt 93) delivered to the molding drum 3. Specifically, in FIG. 4, the vertical axis represents the brake pressure [Mpa], and the horizontal axis represents the position of the rubber member (belt 93) reaching the forming drum 3. As shown in FIG. 4, the brake pressure is relatively low at the winding start time and the winding end time when the width of the belt 93 is narrow, and the brake pressure at the intermediate point between the winding start time and the end time when the width of the belt 93 is wide is relatively low. It is going to be high. That is, from the start of winding to the end of winding, the brake pressure is at least a plurality of stages in the order of the first pressure P1, the second pressure P2 larger than the first pressure P1, and the third pressure P3 smaller than the second pressure P2. Change. In the present embodiment, since the width of the belt 93 changes symmetrically between the winding start side and the winding end side, the first pressure P1 and the third pressure P3 are matched, but the present invention is not limited to this. The first pressure P1 and the third pressure P3 do not have to match. In the present embodiment, since the first pressure P1 and the third pressure P3 match, the change of the brake pressure has two stages, but the present invention is not limited to this. For example, it may be changed in three or more stages. In the present embodiment, the first pressure P1 and the third pressure P3 are 0.01 MPa, and the second pressure P2 is 0.02 MPa. This numerical value is an example and can be changed as appropriate.

図５は変形例を示す。図５に示すように、ブレーキ圧が、第１圧Ｐ１から第２圧Ｐ２へ即時に切り替え、第２圧Ｐ２から第３圧Ｐ３へ即時に切り替えてもよい。しかし、ブレーキ圧を急激に切り替えれば振動が生じるため、振動及び振動による悪影響を許容できるか、圧力差が小さく振動による悪影響がでないのでれば、図５に示すようにブレーキ圧を即時にきりかえてもよい。   FIG. 5 shows a modification. As shown in FIG. 5, the brake pressure may be immediately switched from the first pressure P1 to the second pressure P2, and may be immediately switched from the second pressure P2 to the third pressure P3. However, if the brake pressure is suddenly changed, vibration is generated. Therefore, if the vibration and the adverse effects of the vibration can be tolerated, or if the pressure difference is small and the vibration has no adverse effect, the brake pressure can be changed immediately as shown in FIG. May be.

本実施形態では、ブレーキ圧の切り替えによる悪影響を抑制又は防止するために、図４に示すように、ブレーキ圧は、第１圧Ｐ１から第２圧Ｐ２へ漸増し、第２圧Ｐ２から第３圧Ｐ３へ漸減することが好ましい。このようにすれば、ブレーキ圧を切り替えることによる振動が生じずに成形に悪影響を与えないからである。   In the present embodiment, in order to suppress or prevent the adverse effect due to the switching of the brake pressure, as shown in FIG. 4, the brake pressure gradually increases from the first pressure P1 to the second pressure P2 and from the second pressure P2 to the third pressure P2. It is preferable to gradually reduce the pressure to P3. This is because vibration due to switching of the brake pressure does not occur and adversely affects molding.

図４に示すように、ゴム部材（ベルト９３）の全長Ｌ２の１／４時点と３／４時点では、ブレーキ圧が変化している領域Ａｒ１，Ａｒ２であることが好ましい。ベルト６３の周方向ＣＤにおいて突合せ部が大半を占めており、突合せ部が直線状に傾斜していることから、幅がリニアに変化するからである。   As shown in FIG. 4, it is preferable that the areas Ar1 and Ar2 in which the brake pressure changes are at 1/4 and 3/4 of the total length L2 of the rubber member (belt 93). This is because the abutting portion occupies the majority in the circumferential direction CD of the belt 63 and the abutting portion is linearly inclined, so that the width changes linearly.

以上のように、本実施形態のゴム部材を供給する装置１は、
巻き付け始端９３ａ及び巻き付け終端９３ｂが先細形状であるシート状のゴム材料（ベルト９３）が巻き取られ、ブレーキ機構２０を有するボビン２と、
ボビン２から成形ドラム３にゴム材料（ベルト９３）を供給するためにブレーキ機構２０に付与するブレーキ圧を制御するブレーキ圧制御部４と、を備え、
ブレーキ圧制御部４は、成形ドラム３に繰り出されているゴム材料（ベルト９３）の幅に応じてブレーキ圧を制御するように構成されている。 As described above, the device 1 for supplying the rubber member of the present embodiment,
A bobbin 2 having a braking mechanism 20 on which a sheet-shaped rubber material (belt 93) having a winding start end 93a and a winding end 93b having a tapered shape is wound.
A brake pressure control unit 4 for controlling a brake pressure applied to the brake mechanism 20 in order to supply the rubber material (belt 93) from the bobbin 2 to the molding drum 3,
The brake pressure control unit 4 is configured to control the brake pressure according to the width of the rubber material (belt 93) delivered to the molding drum 3.

本実施形態のゴム材料を供給する方法は、
ブレーキ機構２０を有するボビン２から成形ドラム３に対して、巻き付け始端９３ａ及び巻き付け終端９３ｂが先細形状であるシート状のゴム材料（ベルト９３）を供給することと、
ブレーキ機構２０に付与するブレーキ圧を、成形ドラム３に繰り出されているゴム材料（ベルト９３）の幅に応じて制御することと、
を含む。 The method for supplying the rubber material of the present embodiment is
Supplying a sheet-shaped rubber material (belt 93) whose winding start end 93a and winding end 93b are tapered from the bobbin 2 having the brake mechanism 20 to the forming drum 3.
Controlling the brake pressure applied to the brake mechanism 20 according to the width of the rubber material (belt 93) fed to the molding drum 3;
including.

このように、巻き付け始端及び巻き付け終端が先細形状であるシート状のゴム材料の幅に応じてボビンのブレーキ圧を制御するので、ゴム材料が延びてしまうことや必要以上に引き出されるといった不具合を防止又は抑制することが可能となる。   In this way, the braking pressure of the bobbin is controlled according to the width of the sheet-shaped rubber material with the winding start end and the winding end being tapered, preventing the rubber material from extending and being pulled out more than necessary. Alternatively, it can be suppressed.

本実施形態において、巻き付け開始から巻き付け終了に至るまでに、ブレーキ圧は、第１圧Ｐ１、第１圧Ｐ１よりも大きな第２圧Ｐ２、第２圧Ｐ２よりも小さな第３圧Ｐ３という順序で少なくとも複数回変化する。   In the present embodiment, from the start of winding to the end of winding, the brake pressure is in the order of the first pressure P1, the second pressure P2 larger than the first pressure P1, and the third pressure P3 smaller than the second pressure P2. Change at least multiple times.

巻き付け開始時点及び巻き付け終了時点においては、巻き付けの中間時点で用いる第２圧Ｐ２よりも低い第１圧Ｐ１及び第３圧Ｐ３にてブレーキ圧を制御するので、巻き付け始端９３ａ及び巻き付け終端９３ｂがテンションにより延びてしまう不具合を防止又は抑制することが可能となる。それでいて、ゴム材料の幅が広い中央段階では強いブレーキ圧にて適切にゴム材料を供給することが可能となる。   At the winding start time and the winding end time, the brake pressure is controlled by the first pressure P1 and the third pressure P3, which are lower than the second pressure P2 used at the intermediate time of winding, so that the winding start end 93a and the winding end 93b are tensioned. Therefore, it is possible to prevent or suppress the problem of being extended. Moreover, in the central stage where the width of the rubber material is wide, the rubber material can be appropriately supplied with a strong brake pressure.

図４に示す実施形態において、ブレーキ圧は、第１圧Ｐ１から第２圧Ｐ２へ漸増し、第２圧Ｐ２から第３圧Ｐ３へ漸減する。   In the embodiment shown in FIG. 4, the brake pressure gradually increases from the first pressure P1 to the second pressure P2 and gradually decreases from the second pressure P2 to the third pressure P3.

このようにすれば、ブレーキ圧を切り替えることによる振動が生じずに成形に悪影響を与えないからである。   This is because vibration due to switching of the brake pressure does not occur and adversely affects molding.

図４に示す実施形態において、ゴム材料（ベルト９３）の全長の１／４巻かれた時点及び３／４巻かれた時点は、ブレーキ圧が変化する領域Ａｒ１，Ａｒ２である。   In the embodiment shown in FIG. 4, the time point when the rubber material (belt 93) is wound ¼ and the time point when it is wound 3/4 are areas Ar1 and Ar2 where the brake pressure changes.

このようにすれば、ベルト６３の周方向ＣＤにおいて突合せ部が大半を占めており、突合せ部が直線状に傾斜していることから、幅がリニアに変化するため、適切なブレーキ圧でゴム材料（ベルト９３）を供給することが可能となる。   With this configuration, the abutting portion occupies the majority in the circumferential direction CD of the belt 63, and the abutting portion is linearly inclined, so that the width changes linearly, and therefore the rubber material is applied with an appropriate brake pressure. (Belt 93) can be supplied.

以上、本開示の実施形態について図面に基づいて説明したが、具体的な構成は、これらの実施形態に限定されるものでないと考えられるべきである。本開示の範囲は、上記した実施形態の説明だけではなく特許請求の範囲によって示され、さらに特許請求の範囲と均等の意味および範囲内でのすべての変更が含まれる。   Although the embodiments of the present disclosure have been described above with reference to the drawings, it should be considered that the specific configurations are not limited to these embodiments. The scope of the present disclosure is shown not only by the above description of the embodiments but also by the claims, and further includes meanings equivalent to the claims and all modifications within the scope.

例えば、特許請求の範囲、明細書、および図面中において示した装置、システム、プログラム、および方法における動作、手順、ステップ、および段階等の各処理の実行順序は、前の処理の出力を後の処理で用いるのでない限り、任意の順序で実現できる。特許請求の範囲、明細書、および図面中のフローに関して、便宜上「まず」、「次に」等を用いて説明したとしても、この順で実行することが必須であることを意味するものではない。   For example, the execution order of each process such as an operation, a procedure, a step, and a step in an apparatus, a system, a program, and a method shown in the claims, the specification, and the drawings is the same as the output of the previous process. It can be realized in any order unless it is used in processing. Even if "first", "next", and the like are used for convenience of description in the claims, the description, and the flow in the drawings, this does not mean that execution in this order is essential. ..

上記の各実施形態で採用している構造を他の任意の実施形態に採用することは可能である。各部の具体的な構成は、上述した実施形態のみに限定されるものではなく、本開示の趣旨を逸脱しない範囲で種々変形が可能である。   The structure adopted in each of the above-described embodiments can be adopted in any other embodiment. The specific configuration of each part is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present disclosure.

９３ａ 巻き付け始端
９３ｂ 巻き付け終端
９３ ベルト（ゴム材料）
２ ボビン
２０ ブレーキ機構
３ 成形ドラム
４ ブレーキ圧制御部
Ｐ１ 第１圧
Ｐ２ 第２圧
Ｐ３ 第３圧 93a Winding start end 93b Winding end end 93 Belt (rubber material)
2 bobbin 20 brake mechanism 3 forming drum 4 brake pressure control unit P1 first pressure P2 second pressure P3 third pressure

Claims (8)

巻き付け始端及び巻き付け終端が先細形状であるシート状のゴム材料が巻き取られ、ブレーキ機構を有するボビンと、
前記ボビンから成形ドラムに前記ゴム材料を供給するために前記ブレーキ機構に付与するブレーキ圧を制御するブレーキ圧制御部と、を備え、
前記ブレーキ圧制御部は、前記成形ドラムに繰り出されている前記ゴム材料の幅に応じて前記ブレーキ圧を制御するように構成されている、ゴム材料を供給する装置。 A bobbin having a braking mechanism, in which a sheet-shaped rubber material having a tapered winding start end and a winding end is wound up,
A brake pressure control unit that controls a brake pressure applied to the brake mechanism to supply the rubber material from the bobbin to the molding drum,
The said brake pressure control part is a device which supplies a rubber material which is comprised so that the said brake pressure may be controlled according to the width | variety of the said rubber material which is sent out to the said shaping | molding drum. 巻き付け開始から巻き付け終了に至るまでに、前記ブレーキ圧は、第１圧、前記第１圧よりも大きな第２圧、前記第２圧よりも小さな第３圧という順序で少なくとも複数段階に変化する、請求項１に記載の装置。   From the start of winding to the end of winding, the brake pressure changes in at least a plurality of stages in the order of a first pressure, a second pressure larger than the first pressure, and a third pressure smaller than the second pressure. The device according to claim 1. 前記ブレーキ圧は、前記第１圧から前記第２圧へ漸増し、前記第２圧から前記第３圧へ漸減する、請求項２に記載の装置。   The apparatus according to claim 2, wherein the brake pressure gradually increases from the first pressure to the second pressure and gradually decreases from the second pressure to the third pressure. 前記ゴム材料の全長の１／４巻かれた時点及び３／４巻かれた時点は、ブレーキ圧が変化する領域である、請求項３に記載の装置。   The device according to claim 3, wherein the time point when the rubber material is wound by ¼ and the time point when the rubber material is wound by 3/4 are areas where the brake pressure changes. ブレーキ機構を有するボビンから成形ドラムに対して、巻き付け始端及び巻き付け終端が先細形状であるシート状のゴム材料を供給することと、
前記ブレーキ機構に付与するブレーキ圧を、前記成形ドラムに繰り出されている前記ゴム材料の幅に応じて制御することと、
を含む、ゴム材料を供給する方法。 Supplying a sheet-shaped rubber material having a tapered winding start end and winding end from the bobbin having the brake mechanism to the forming drum,
Controlling the brake pressure applied to the brake mechanism according to the width of the rubber material fed to the molding drum;
And a method of supplying a rubber material. 巻き付け開始から巻き付け終了に至るまでに、前記ブレーキ圧を、第１圧、前記第１圧よりも大きな第２圧、前記第２圧よりも小さな第３圧という順序で少なくとも複数段階変化させる、請求項５に記載の方法。   From the start of winding to the end of winding, the brake pressure is changed in at least a plurality of steps in the order of a first pressure, a second pressure larger than the first pressure, and a third pressure smaller than the second pressure. Item 5. The method according to Item 5. 前記ブレーキ圧は、前記第１圧から前記第２圧へ漸増し、前記第２圧から前記第３圧へ漸減する、請求項６に記載の方法。   7. The method of claim 6, wherein the brake pressure gradually increases from the first pressure to the second pressure and gradually decreases from the second pressure to the third pressure. 前記ゴム材料の全長の１／４巻かれた時点及び３／４巻かれた時点は、ブレーキ圧が変化する領域である、請求項７に記載の方法。   The method according to claim 7, wherein the time point when the rubber material is wound by ¼ and the time point when the rubber material is wound by 3/4 are areas where the brake pressure changes.
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